Ilker ManapandClaude Opus 5.5
fc60481e40
140 named 150 a store member, 150 named itself a control plane: Prometheus asking both scraped 150 twice and counted its every series twice, and asked of 140 alone while 150 led it lost every node. Each control plane now lists all of them as control planes before the store's members, so two answers agree and a target is scraped once. The shipped prometheus.yml says to scrape and ask every control plane. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
50 lines
1.7 KiB
Go
50 lines
1.7 KiB
Go
package adminapi
|
|
|
|
import (
|
|
"net/http/httptest"
|
|
"testing"
|
|
)
|
|
|
|
func TestNodeExporterTargetsAreTheControlPlaneAndTheStore(t *testing.T) {
|
|
a := &API{}
|
|
a.SetStoreStatus(func() ([]StoreMember, error) {
|
|
return []StoreMember{{Name: "pg01", Host: "10.0.0.149"}, {Name: "ctl", Host: "10.0.0.140"}}, nil
|
|
})
|
|
r := httptest.NewRequest("GET", "http://10.0.0.140:9091/prometheus/targets", nil)
|
|
got := a.nodeExporterTargetsWith(r, nil)
|
|
if len(got) != 2 {
|
|
t.Fatalf("%+v", got)
|
|
}
|
|
for _, g := range got {
|
|
if g.Targets[0] == "10.0.0.140:9100" && g.Labels["role"] != "control-plane" {
|
|
t.Errorf("the control plane twice: %+v", got)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestEveryControlPlaneListsTheOthersAlike(t *testing.T) {
|
|
// 140 called 150 a store member and 150 called itself a control plane:
|
|
// Prometheus, asking both, scraped 150 twice and counted it twice.
|
|
targets := func(self string) map[string]string {
|
|
a := &API{}
|
|
a.SetStoreStatus(func() ([]StoreMember, error) {
|
|
return []StoreMember{{Name: "llmgw-pg01", Host: "10.0.0.149"}, {Name: "llmgw-ctl02", Host: "10.0.0.150"}}, nil
|
|
})
|
|
a.SetControlPlanes(func() ControlPlanes {
|
|
return ControlPlanes{Members: []ControlPlane{{Name: "llmgw-ctl", Address: "10.0.0.140:7443"},
|
|
{Name: "llmgw-ctl02", Address: "10.0.0.150:7443"}}}
|
|
})
|
|
r := httptest.NewRequest("GET", "http://"+self+":9091/prometheus/targets", nil)
|
|
out := map[string]string{}
|
|
for _, g := range a.nodeExporterTargetsWith(r, nil) {
|
|
out[g.Targets[0]] = g.Labels["role"]
|
|
}
|
|
return out
|
|
}
|
|
from140, from150 := targets("10.0.0.140"), targets("10.0.0.150")
|
|
if from140["10.0.0.150:9100"] != "control-plane" || from150["10.0.0.140:9100"] != "control-plane" ||
|
|
from140["10.0.0.149:9100"] != "store" {
|
|
t.Errorf("from 140 %v, from 150 %v", from140, from150)
|
|
}
|
|
}
|